Final answer:
Isotonic, hypertonic, and hypotonic solutions are related to solute concentration. In an isotonic solution, the solute concentration is the same as another solution. In a hypertonic solution, the solute concentration is higher, while in a hypotonic solution, the solute concentration is lower.
Step-by-step explanation:
Isotonic, hypertonic, and hypotonic solutions are related to the concentration of solutes in comparison to another solution. An isotonic solution has the same solute concentration as another solution.
A hypertonic solution has a higher solute concentration, while a hypotonic solution has a lower solute concentration. For example, when a red blood cell is exposed to a hypotonic solution, water enters the cell, causing it to expand.
On the other hand, in a hypertonic solution, water leaves the cell, causing it to shrink.